The New York Times by Mike Hale

The mood and story lines in the new season are more like those of a conventional mystery — there are police chases now — with the dramatic spice of a handful of characters knowing an earthshaking secret that they can’t talk about without being considered crazy. It’s a great situation for Byrne, whose grumpy, weary performance as Bill drives the show.

Decider by Joel Keller

This miniseries isn’t quite the War Of The Worlds you’re familiar with, but it does seem to be looking like a fine apocalyptic survival story that at least has an ending, unlike some others that we’ve been watching on other cable channels for the past ten years.

The A.V. Club by Joshua Alston

Between the laconic pace and the intense focus on characters, Worlds is an alien invasion story that doesn’t spend much time fretting about its aliens beyond the characters whose jobs involve fretting about things. It’s much more interested in how people bond and persevere through shared trauma and survival instinct. ... But like any slow burn, Worlds reveals its charms over time, once the audience has shed any expectation of Overman following Wells’ blueprint.

RogerEbert.com by Brian Tallerico

The approach by Howard Overman (“Misfits”) is so joyless and even cruel that it becomes a dirge. ... The problem with monotony is it becomes impossible to care. Characters become disposable; their plight becomes superficial through the repetition. There’s a difference between something that’s intense and something that’s just brutally bleak. It almost feels like this “War” isn’t worth winning.